CN215621926U - External hydraulic brake device - Google Patents
External hydraulic brake device Download PDFInfo
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- CN215621926U CN215621926U CN202121353151.7U CN202121353151U CN215621926U CN 215621926 U CN215621926 U CN 215621926U CN 202121353151 U CN202121353151 U CN 202121353151U CN 215621926 U CN215621926 U CN 215621926U
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- 239000007788 liquid Substances 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims description 46
- 238000001802 infusion Methods 0.000 claims description 30
- 230000009471 action Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 2
- 230000003137 locomotive effect Effects 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The utility model discloses an external hydraulic brake device which comprises an electric control system, a main control valve, a hydraulic brake, a liquid supply system and a brake valve, wherein the electric control system controls the brake valve to be opened and closed, a valve core of the main control valve and a valve body form a hydraulic cavity, a liquid inlet flow channel and a liquid outlet flow channel are formed on the side surface of the valve core, a gate valve is arranged on the hydraulic brake, the liquid supply system comprises a liquid storage tank and a liquid conveying pipeline, a second branch, a first branch and a third branch are arranged on the liquid conveying pipeline, the first branch is sequentially communicated with the liquid inlet flow channel, an inner cavity of the brake and the second branch, the brake valve is communicated with the third branch, an outlet of the brake valve is divided into a fourth branch and a fifth branch, the fourth branch is communicated with an inlet of the gate valve, and an outlet of the gate valve is communicated with the fifth branch after penetrating through the hydraulic cavity. The utility model provides an external hydraulic brake device capable of providing auxiliary braking for a hydraulic transmission locomotive, which can automatically adjust the braking power and the braking torque according to different running speeds of the locomotive.
Description
Technical Field
The utility model belongs to the field of locomotive hydraulic braking, and particularly relates to an external hydraulic braking device.
Background
Hydrodynamic braking is a device that uses fluid damping to produce a retarding effect. The body of the hydraulic brake is fixed on the brake shell, the brake wheel is connected with the transmission shaft through spline fit, and blades are cast on the brake wheel and the body. When the hydraulic brake is in work, the first infusion pump is started, and the working fluid is injected into the hydraulic brake through the main control valve and is filled into a working cavity between the brake wheel and the body. When the brake wheel rotates, a torque is applied to the body through the working fluid, and the counter torque of the body is the braking torque of the body, and the value of the counter torque depends on the flow and pressure of the working fluid in the working cavity and the rotating speed of the brake wheel. The friction of the working fluid and the impact on the body are converted into heat energy, so that the temperature of the working fluid is increased, and the working fluid can be introduced into the heat exchanger to circularly flow so as to consume heat.
The hydraulic brake is mainly characterized in that: the braking efficiency is higher than that of an engine retarding device, and the vehicle can run downhill at a higher speed; the size and the mass are small, and the hydraulic transmission device can be connected into a whole; no abrasion is generated during working; the heat generated by the working fluid is easy to consume, and the normal working temperature of the engine can be kept when the engine descends a long slope; the braking torque tends to zero at low speed, and the wheels cannot slide when braking on a smooth road surface. However, the current hydraulic brake device cannot adjust the magnitude of the braking torque and the braking power in real time according to the vehicle speed, and has limitations in application.
Disclosure of Invention
The utility model aims at the problem, and researches and designs an external hydraulic brake device to solve the problem that the traditional hydraulic brake device cannot adjust the brake torque and the brake power in real time according to the vehicle speed. The technical means adopted by the utility model are as follows:
an external hydraulic brake device comprising:
the hydraulic brake comprises an electric control system, a main control valve, a hydraulic brake, a liquid supply system and a brake valve;
the electric control system controls the brake valve to be opened and closed;
the main control valve comprises a valve body, a valve core and a spring, wherein one end of the valve core is abutted against the spring, the other end of the valve core and the valve body form a hydraulic cavity, the side surface of the valve core and the valve body form a liquid inlet flow channel and a liquid outlet flow channel which are mutually separated, and when liquid is filled in the hydraulic cavity, the liquid inlet flow channel and the liquid outlet flow channel are opened;
the hydraulic brake comprises a brake body and a brake wheel matched with the input shaft, an inner cavity is formed between the brake body and the brake wheel, and the hydraulic brake is provided with a gate valve for preventing cavitation erosion of the inner cavity;
the liquid supply system comprises a liquid storage tank and a liquid conveying pipeline, a main transmission system actuating mechanism is communicated with the liquid storage tank through the liquid conveying pipeline, a second branch, a first branch and a third branch are sequentially arranged on the liquid conveying pipeline along the conveying direction of working liquid, the first branch is communicated with the liquid inlet flow channel and the inner cavity, and the second branch is communicated with the liquid outlet flow channel and the inner cavity;
an inlet of the brake valve is communicated with the third branch, an outlet of the brake valve is divided into two branches, namely a fourth branch and a fifth branch, the fourth branch is communicated with an inlet of the gate valve, and an outlet of the gate valve is communicated with the fifth branch through a hydraulic cavity; the fifth branch is used for sequentially communicating the outlet of the gate valve, the hydraulic cavity and the brake valve;
and the fourth branch and the fifth branch are respectively provided with a one-way valve, and working fluid flows into the gate valve through the fourth branch and flows out through the fifth branch.
Preferably, the proportional valve further comprises a proportional valve, a valve seat, a first valve core and a first spring are arranged in the proportional valve, one end of the first valve core is abutted to the first spring to form a first cavity for accommodating the first spring, the other end of the first valve core is abutted to the valve seat to form a second cavity with the valve seat, a pressure relief cavity for accommodating working fluid is formed on the side surface of the first valve core, a pressure relief flow passage is arranged in the first valve core, and the flow passage can be communicated with the pressure relief cavity when working;
the infusion pump is characterized in that a first infusion pump is arranged on the infusion pipeline, a sixth branch is arranged at the liquid outlet end of the first infusion pump, a seventh branch is arranged at the liquid inlet end of the first infusion pump, the sixth branch and the seventh branch are communicated with the pressure relief cavity, and the first valve core blocks the communication between the sixth branch and the seventh branch under the elastic action of the first spring.
Preferably, the third branch is provided with an eighth branch, the eighth branch is communicated with the first chamber, the working fluid can enter the first chamber through the eighth branch, so that the first spring is relaxed, the eighth branch is provided with an electromagnetic valve, the electromagnetic valve is connected with the electric control system, when the electromagnetic valve is powered on, the second valve core moves towards the right side to compress the second spring, the eighth branch is communicated with the first chamber, and the working fluid can enter the first chamber through the eighth branch.
Preferably, a pressure sensor and a temperature sensor are arranged in the hydraulic brake, and the pressure sensor and the temperature sensor are connected with the electronic control system.
Preferably, a radiator and a filter are arranged on the infusion pipeline between the first branch and the second branch.
Preferably, the brake wheel is connected with the input shaft in a spline fit mode.
Preferably, a second infusion pump, a pressure control valve and a ninth branch are arranged on the third branch, and the ninth branch supplies liquid to the part to be lubricated.
Compared with the prior art, the external hydraulic brake device has the beneficial effects that:
the external hydraulic brake device not only has all the characteristics of the existing hydraulic brake device, but also is additionally provided with a proportion adjusting device, can automatically adjust the braking power and the braking torque according to the difference of the running speed of the locomotive, and has the characteristics of high buffering efficiency ratio, small size and mass, no abrasion, good heat dissipation performance, high reliability and the like.
Drawings
Fig. 1 is a schematic view of a hydraulic brake device in an original state;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of the hydraulic brake device in an operating state;
fig. 4 is a schematic cross-sectional view B-B of fig. 3.
In the figure, the position of the upper end of the main shaft,
100. an electronic control system; 101. a solenoid valve circuit; 102. a brake valve circuit; 103. a pressure sensor; 104. a temperature sensor;
200. a proportional valve; 201. a valve seat; 202. a first valve spool; 203. a first spring; 204. a first chamber; 205. a second chamber; 206. a pressure relief chamber; 207. a pressure relief flow passage; 210. an electromagnetic valve; 211. a second valve core; 212. a second spring;
300. a master control valve; 301. a valve core; 302. a spring; 303. a liquid inlet flow channel; 304. a liquid outlet flow passage; 305. a hydraulic chamber; 306. a valve body;
400. a hydraulic brake; 401. a gate valve; 402. a bearing housing; 403. a bearing; 404. a brake body; 405. a brake wheel; 406. an input shaft; 407. a shaft sleeve;
500. a brake valve;
600. a liquid supply system; 601. a liquid storage tank; 602. a filter; 603. a one-way valve; 610. a main transmission system actuator; 620. a heat sink; 630. a first infusion pump; 640. a second infusion pump; 650. a pressure control valve; 660. a component to be lubricated;
700. a transfusion pipeline; 701. a first branch; 702. a second branch circuit; 703. a third branch; 704. a fourth branch; 705. a fifth branch; 706. a sixth branch; 707. a seventh branch; 708. an eighth branch; 709. and a ninth branch.
Detailed Description
As shown in fig. 1-4, an external hydraulic brake device includes an electronic control system 100, a master valve 300, a hydraulic brake 400, a brake valve 500, and a fluid supply system 600.
The electronic control system 100 controls the opening and closing of the brake valve 500 through the line 102, and the electronic control system 100 can be directly connected to a controller of a vehicle, so that integrated control is facilitated.
The main control valve 300 is an executing element for controlling oil filling in the hydraulic brake 400, the main control valve 300 comprises a valve body 306, a valve core 301 and a spring 302, one end of the valve core 301 is abutted against the spring 302, the other end of the valve core 301 and the valve body 306 form a hydraulic cavity 305, the side surface of the valve core 301 and the valve body 306 form a liquid inlet flow channel 303 and a liquid outlet flow channel 304 which are mutually separated, and the liquid inlet flow channel 303 and the liquid outlet flow channel 304 are respectively used for controlling working liquid to enter and exit the hydraulic brake.
The hydrodynamic brake 400 includes a brake body 404, a bearing housing 402, a bearing 403, a shaft housing 407, and a brake wheel 405 engaged with an input shaft 406 (an output end of the main drive system), and an inner chamber for containing a working fluid is formed between the brake body 404 and the brake wheel 405. The hydraulic brake 400 is provided with the gate valve 401, and the gate valve 401 can eliminate the cavitation phenomenon generated by the rotation of air in the inner cavity driven by the high-speed rotation of the brake wheel 405 in a non-working state, thereby playing a role in protecting components in the hydraulic brake 400.
The liquid supply system 600 includes a liquid storage tank 601 and a liquid transfer pipeline 700, the main transmission system actuator 610 is communicated with the liquid storage tank 601 through the liquid transfer pipeline 700, and the working fluid can be selected from media such as transmission oil. The infusion pipeline 700 is sequentially provided with a second branch 702, a first branch 701 and a third branch 703 along the conveying direction of the working fluid, the first branch 701 is communicated with the liquid inlet flow channel 303 and the inner cavity, and the second branch 702 is communicated with the liquid outlet flow channel 304 and the inner cavity. When the hydraulic cavity 305 is filled with hydraulic fluid, the valve core 301 moves downward under the action of hydraulic pressure, the liquid inlet flow channel 303 and the liquid outlet flow channel 304 are opened, and the working fluid can enter the inner cavity of the hydraulic brake 400 along the first branch 701 and the liquid inlet flow channel 303 and return through the second branch 702 and the liquid outlet flow channel 304. An inlet of the brake valve 500 is communicated with the third branch 703, an outlet of the brake valve 500 is divided into two branches, namely a fourth branch 704 and a fifth branch 705, the fourth branch 704 is communicated with an inlet of the gate valve 401, and an outlet of the gate valve 401 is communicated with the fifth branch 705 through a hydraulic chamber 305; the fifth branch 705 sequentially communicates the outlet of the gate valve 401, the hydraulic chamber 305, and the brake valve 500.
Check valves 603 are arranged on the fourth branch 704 and the fifth branch 705, and the working fluid flows into the gate valve 401 through the fourth branch 704 and flows out through the fifth branch 705. When the brake valve 500 is powered on, due to the interlocking function of the one-way valves 603 on the fourth branch 704 and the fifth branch 705, the control valve can be opened only under the condition that the gate valve 401 is opened first, so that the gate valve 401 is prevented from being damaged due to too fast oil filling, and the automatic protection function is achieved; and if the gate valve 401 is not completely opened, the oil is filled, so that the flow of the working fluid in the inner cavity of the hydraulic brake 400 is blocked, and the hydraulic braking effect is influenced.
The proportional valve further comprises a proportional valve 200, a valve seat 201, a first valve core 202 and a first spring 203 are arranged in the proportional valve 200, one end of the first valve core 202 is abutted to the first spring 203 and forms a first cavity 204 for accommodating the first spring 203, the other end of the first valve core 202 is abutted to the valve seat 201 and forms a second cavity 205 with the valve seat 201, a pressure relief cavity 206 for accommodating working fluid is formed in the side face of the first valve core 202, a flow passage 207 is arranged in the first valve core 202, and the flow passage 207 can be communicated with the pressure relief cavity 206 when working. Wherein the first chamber 204 and the second chamber 205 are independently closed chambers, and the outlet of the first infusion pump 630 is connected with the sixth branch 706.
The infusion pipeline 700 is provided with a first infusion pump 630, the liquid outlet end of the first infusion pump 630 is provided with a sixth branch 706, the liquid inlet end of the first infusion pump 630 is provided with a seventh branch 707, and the first valve core 202 blocks the communication between the sixth branch 706 and the seventh branch 707 under the action of the elastic force of the first spring 203. When the working fluid pressure of the sixth branch 706 moves the valve core 202 downwards, the working fluid compresses the first spring 203 through the flow passage 207, so that the sixth branch 706 is communicated with the seventh branch 707, and the pressure relief function is realized. That is, the proportional valve 200 has a function of regulating the working fluid pressure in the non-working state, so as to prevent the internal components of the hydraulic brake 400 from being damaged due to the excessive working fluid pressure.
An eighth branch 708 is arranged on the third branch 703, an electromagnetic valve 210 is arranged on the eighth branch 708, a second valve core 211 and a second spring 212 are arranged in the electromagnetic valve 210, the electromagnetic valve 210 is connected with the electronic control system 100 through a line 101 of the electromagnetic valve 210, when the electromagnetic valve 210 is electrified, the second valve core 211 moves towards the right side to compress the second spring 212, the eighth branch 708 is communicated with the first chamber 204, and working fluid can enter the first chamber 204 through the eighth branch 708. When the proportional valve 200 is in an operating state, when the working fluid pressure of the sixth branch 706 opens the proportional valve 200 and the seventh branch 707 is connected, the electronic control system 100 may control the pressure of the first chamber 204 by adjusting the input current/voltage to control the opening degree of the second spool 211, so as to control the tensioning degree of the first spring 203, thereby adjusting the pressure and flow rate of the fluid delivery pipeline 700, and further adjusting the inlet pressure and flow rate of the hydraulic brake 400.
A pressure sensor 103 and a temperature sensor 104 are arranged in the hydraulic brake 400, the pressure sensor 103 can monitor the pressure of the inner cavity of the hydraulic brake 400 in real time, and the temperature sensor 104 can monitor the temperature of the inner cavity of the hydraulic brake 400 in real time. The pressure sensor 103 and the temperature sensor 104 are connected to the electronic control system 100, and the working state of the hydraulic brake 400 can be monitored through the electronic control system 100, so that the valves can be controlled to be opened or closed in time.
Check valves 603 are arranged on the fourth branch 704 and the fifth branch 705, and the working fluid flows into the gate valve 401 through the fourth branch 704 and flows out through the fifth branch 705. When the brake valve 500 is powered on, due to the interlocking function of the one-way valves 603 on the fourth branch 704 and the fifth branch 705, the control valve can be opened only under the condition that the gate valve 401 is opened first, so that the gate valve 401 is prevented from being damaged due to too fast oil filling, and the automatic protection function is achieved; and if the gate valve 401 is not completely opened, the oil is filled, so that the flow of the working fluid in the inner cavity of the hydraulic brake 400 is blocked, and the hydraulic braking effect is influenced.
A radiator 620 and a filter 602 are arranged on the infusion pipeline 700 between the first branch 701 and the second branch 702, and in the braking process, the high-temperature and high-pressure working fluid in the hydraulic brake 400 is subjected to next cyclic utilization after being radiated by the radiator 620. The filters 602 are all provided with check valves 603, and in particular, in application, a plurality of filters 602 may be provided according to actual working conditions, and the specific number is not limited in the present invention.
The brake wheel 405 is connected with the input shaft 406 in a spline fit manner to obtain the speed of the main transmission system, so that the brake can be controlled at any time conveniently.
The third branch 703 is provided with a second infusion pump 640, a pressure control valve 650 and a ninth branch 709, the second infusion pump 640 is used for providing power for the working fluid of the third branch 703, the pressure control valve 650 can regulate and control the working fluid pressure of the third branch 703, and the ninth branch 709 can supply fluid for the component to be lubricated 660.
The external hydraulic brake device of the present invention has two main states of use.
First, initial state (as figure 1 and figure 2)
When the brake valve 500 and the solenoid valve 210 are not powered, the hydraulic brake 400 does not work at this time, the main transmission system supplies the main transmission system execution mechanism 610 with liquid through the liquid supply system 600, relevant operations are executed, and the proportional valve 200 is used as a pressure control valve 650 to ensure that the pressure in the liquid conveying pipeline 700 does not exceed the safety pressure.
The main working process is as follows: when the first infusion pump 630 starts to supply liquid, the working fluid enters the proportional valve 200 from the sixth branch 706, and when the working fluid pressure in the sixth branch 706 is low, the first valve core 202 is positioned at the uppermost position under the action of the first spring 203, the proportional valve 200 is closed, and the seventh branch 707 has no liquid; when the pressure in the sixth branch 706 is too high, the working fluid compresses the first spring 203 through the flow passage 207, the downward pressure on the first valve core 202 is increased, so that the first valve core 202 starts to move downward, the seventh branch 707 is connected, the working fluid returns to the suction side of the first infusion pump 630 through the seventh branch 707, the pressure in the infusion pipeline 700 is reduced, and the pressure in the infusion pipeline 700 is determined by the supply pressure of the working fluid and the combined acting force of the first spring 203 on the first valve core 202.
In addition, at this time, the mechanical connection in the main transmission system drives the input shaft 406 and the brake wheel 405 to rotate, so that air in the inner cavity of the hydraulic brake 400 rotates, cavitation is generated on the brake wheel 405 and the brake body 404, but the gate valve 401 is in a closed state, so that the rotation of air is blocked, and the hydraulic brake 400 plays a role in protecting components.
Second, the working state (as in fig. 3 and 4)
When the brake valve 500 and the electromagnetic valve 210 are powered on, the main transmission system executing mechanism 610 does not work, the main transmission system supplies liquid to the hydraulic brake 400 through the liquid supply system 600, the proportional valve 200 is used as a pressure/flow regulating valve, the flow of the working liquid entering the hydraulic brake 400 in the liquid conveying pipeline 700 can be controlled by regulating the opening degree of the proportional valve 200 to achieve the effects of regulating and controlling the pressure/flow of the hydraulic brake 400 at any time, and further achieve the effect of controlling the braking torque and power of the vehicle at any time.
The main working process is as follows: after the first infusion pump 630 starts to supply liquid, the working fluid enters the inner cavity of the hydraulic brake 400 through the infusion pipeline 700, the radiator 620, the main control valve 300 (at this time, the brake valve 500 is powered on, and the fourth branch 704 and the fifth branch 705 are opened), and the first branch 701 to participate in braking, and then the high-temperature and high-pressure liquid enters the radiator 620 through the second branch 702 and the main control valve 300 to perform next circulation.
The operation of the proportional valve 200 is now as follows: after the first infusion pump 630 starts to supply liquid, when the working fluid pressure of the sixth branch 706 opens the proportional valve 200 and the seventh branch 707 is connected, the electromagnetic valve 210 is energized to push the second valve element 211 to the right, so that the working fluid enters the first chamber 204 from the eighth branch 708, the pressure in the first chamber 204 below the first valve element 202 is increased, the first valve element 202 moves upwards, the seventh branch 707 is closed, the pressure in the infusion pipeline 700 is increased, the opening degree of the second valve element 211 can be controlled step by adjusting the magnitude of the control current of the electromagnetic valve 210, and the pressure and the flow rate of the infusion pipeline 700 are controlled to achieve the function of proportional regulation.
The utility model provides an external hydraulic brake device capable of providing auxiliary braking for a hydraulic transmission locomotive, which can be used as an independent subsystem to be connected into a main transmission system, wherein an electric control system 100, a proportional valve 200, a main control valve 300 and a hydraulic brake 400 (except for a bearing) are newly added parts, and the other parts are original parts in the main transmission system. The electronic control system 100 can be directly connected to a controller of a vehicle, and has the main functions of monitoring the pressure and temperature of the inner cavity of the hydraulic brake 400 in real time and controlling the opening and closing of the brake solenoid valve 210. The external hydraulic brake device not only has all the characteristics of the existing hydraulic brake device, but also is additionally provided with a proportion adjusting device, can automatically adjust the braking power and the braking torque according to the difference of the running speed of the locomotive, has high braking response speed, and has the characteristics of high buffering efficiency ratio, small size and quality, no abrasion, good heat dissipation performance, high reliability and the like.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (7)
1. An external hydraulic brake device, comprising:
the hydraulic brake system comprises an electric control system (100), a main control valve (300), a hydraulic brake (400), a liquid supply system (600) and a brake valve (500);
the electric control system (100) controls the on-off of the brake valve (500);
the main control valve (300) comprises a valve body (306), a valve core (301) and a spring (302), one end of the valve core (301) is abutted to the spring (302), the other end of the valve core and the valve body (306) form a hydraulic cavity (305), the side surface of the valve core (301) and the valve body (306) form a liquid inlet flow channel (303) and a liquid outlet flow channel (304) which are mutually separated, and when liquid is filled in the hydraulic cavity (305), the liquid inlet flow channel (303) and the liquid outlet flow channel (304) are opened;
the hydraulic brake (400) comprises a brake body (404) and a brake wheel (405) matched with an input shaft (406), an inner cavity is formed between the brake body (404) and the brake wheel (405), and a gate valve (401) for preventing the inner cavity from cavitation erosion is arranged on the hydraulic brake (400);
the liquid supply system (600) comprises a liquid storage tank (601) and a liquid conveying pipeline (700), a main transmission system actuating mechanism (610) is communicated with the liquid storage tank (601) through the liquid conveying pipeline (700), a second branch (702), a first branch (701) and a third branch (703) are sequentially arranged on the liquid conveying pipeline (700) along the conveying direction of working liquid, the first branch (701) is communicated with the liquid inlet flow channel (303) and the inner cavity, and the second branch (702) is communicated with the liquid outlet flow channel (304) and the inner cavity;
an inlet of the brake valve (500) is communicated with the third branch (703), an outlet of the brake valve (500) is divided into two branches, namely a fourth branch (704) and a fifth branch (705), the fourth branch (704) is communicated with an inlet of the gate valve (401), and an outlet of the gate valve (401) is communicated with the fifth branch (705) through a hydraulic cavity (305); the fifth branch (705) sequentially communicates the outlet of the gate valve (401), the hydraulic chamber (305) and the brake valve (500);
and the fourth branch (704) and the fifth branch (705) are both provided with one-way valves (603), and working fluid flows into the gate valve (401) through the fourth branch (704) and flows out through the fifth branch (705).
2. An external hydraulic brake device according to claim 1, further comprising a proportional valve (200), wherein a valve seat (201), a first spool (202) and a first spring (203) are arranged in the proportional valve (200), one end of the first spool (202) abuts against the first spring (203) and forms a first chamber (204) for accommodating the first spring (203), the other end of the first spool abuts against the valve seat (201) and forms a second chamber (205) with the valve seat (201), a pressure relief chamber (206) for accommodating working fluid is formed on the side surface of the first spool (202), a flow passage (207) is arranged in the first spool (202), and the flow passage (207) can be communicated with the pressure relief chamber (206) when in operation;
be equipped with first transfer pump (630) on infusion pipeline (700), the play liquid end of first transfer pump (630) is equipped with sixth branch road (706), the feed liquor end of first transfer pump (630) is equipped with seventh branch road (707) under the spring action of first spring (203), first case (202) block the intercommunication of sixth branch road (706) and seventh branch road (707).
3. An external hydraulic brake device according to claim 2, characterized in that an eighth branch (708) is provided on the third branch (703), a solenoid valve (210) is provided on the eighth branch (708), the solenoid valve (210) is connected to the electronic control system (100), when the solenoid valve (210) is energized, the second spool (211) moves to the right to compress the second spring (212), the eighth branch (708) is communicated with the first chamber (204), and the working fluid can enter the first chamber (204) through the eighth branch (708).
4. An external hydraulic brake device according to claim 3, characterized in that a pressure sensor (103) and a temperature sensor (104) are provided in said hydraulic brake (400), said pressure sensor (103) and temperature sensor (104) being connected to said electronic control system (100).
5. An external hydraulic brake device according to claim 1, characterized in that a radiator (620) and a filter (602) are provided in the fluid line (700) between the first branch (701) and the second branch (702).
6. An external hydraulic brake device according to claim 1, wherein the brake wheel (405) is connected to the input shaft (406) in a spline fit.
7. An external hydraulic brake device according to claim 1, characterized in that a second infusion pump (640), a pressure control valve (650) and a ninth branch (709) are provided in the third branch (703), the ninth branch (709) feeding the part to be lubricated (660).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121353151.7U CN215621926U (en) | 2021-06-17 | 2021-06-17 | External hydraulic brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121353151.7U CN215621926U (en) | 2021-06-17 | 2021-06-17 | External hydraulic brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215621926U true CN215621926U (en) | 2022-01-25 |
Family
ID=79943590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121353151.7U Withdrawn - After Issue CN215621926U (en) | 2021-06-17 | 2021-06-17 | External hydraulic brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215621926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200029A (en) * | 2021-06-17 | 2021-08-03 | 中车大连机车研究所有限公司 | External hydraulic brake device |
-
2021
- 2021-06-17 CN CN202121353151.7U patent/CN215621926U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200029A (en) * | 2021-06-17 | 2021-08-03 | 中车大连机车研究所有限公司 | External hydraulic brake device |
| CN113200029B (en) * | 2021-06-17 | 2024-05-14 | 中车大连机车研究所有限公司 | External hydraulic braking device |
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